单选题Metal particles accumulated from the wearing of components in a diesel engine can result from lube oil that has been contaminated with().Aabrasive particlesBmetallic oxidesCcorrosive acidsDany or all of the above
单选题
Metal particles accumulated from the wearing of components in a diesel engine can result from lube oil that has been contaminated with().
A
abrasive particles
B
metallic oxides
C
corrosive acids
D
any or all of the above
参考解析
解析:
暂无解析
相关考题:
单选题A vessel’s quarter is that section which is().AabeamBdead asternCjust aft of the bowDon either side of the stern
单选题The output voltage of a three-phase alternator is regulated by the ().AAC voltage to the armatureBAC voltage to the fieldCDC voltage to the armatureDDC voltage to the field
单选题Oil pressure in the lubrication system is () the static sea water head to ensure that sea water () the stem-tube.Alower than;can lubricateBlower than;can coolChigher than;can enterDhigher than ;cannot enter
单选题如果海岸电台利用NBDP技术呼叫船舶电台,则海岸电台操作员应首先了解()信息。A只需要了解被叫船舶船位B只需要了解被叫船舶识别码和被叫船舶可能值守的频率C只需要了解被叫船舶可能可能值守的频率D需要了解被叫船舶船位、船舶识别码和被叫船舶可能值守的频率等
单选题The holding power of an anchor at a given scope of cable increases when the().Aamount of chain lying along the bottom increasesBlength of the catenary is reducedCmooring line tension is increasedDamount of chain lying along the bottom decreases
单选题On a ship,when may a work vest be substituted for a required life preserver?()ATo replace a damaged life preserverBFor use during fire drillsCFor use during boat drillsDAt no time
单选题Most anchor handling equipment incorporates () for mooring purposes.Acable liftersBspur wheelsCbollardDwarpends
单选题我国海商法规定,如果航次租船合同中订有承租人选择卸货港条款的,在承租人未按照合同约定及时通知确定的卸货港时,船长可以()。A从约定的选卸港中自行选定一港卸货B根据货主的指示选定卸货港C质询承租人,并根据其指示选定卸货港D任选一安全港口进行卸货
单选题请问下列关于气阀定时说法中,正确的是()。A四冲程柴油机排气阀在膨胀行程的上止点前打开B四冲程柴油机排气阀在排气行程的上止点前关闭C四冲程柴油机排气阀在膨胀行程的下止点前打开D四冲程柴油机排气阀在排气行程的上止点关闭
单选题在船舶保险中除合同另有规定外,在何种情况下保险人不负责赔偿责任?()A修理人员的疏忽或过失B发生部分损失后未经修复又发生全部损失C船舶连续发生数次保险事故已超过保险金额D船舶发生的自然磨损或锈蚀
单选题离心泵叶轮一般采用()叶片。A前弯B后弯C径向D三种都有